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Introduction to Plant Kingdom

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Kingdom Plantae - definition

  • Multicellular, autotrophic organisms that photosynthesize to fix inorganic carbon (from atmospheric CO) into organic molecules.

  • Classification of plants is based on morphology, presence and absence of vascular tissue and presence and absence of seeds, flower and fruits.

  • In 1883, Etcher modified the classification of kingdom Plantae by adding two sub kingdoms, Cryptogams and Phanerogams.

Plant Kingdom - definition

The plant kingdom is divided into two major groups cyptogamae and phanerogamae. Cryptogamae is flowerless and seedless plants while phanerogamae is flowering and seed bearing plants.
Cryptogamae
  • Thallophyta is the plants which are aquatic and cannot survive on land because of undeveloped root and stem. For example, algae.
  • Bryophyta is the plants which can survive on both land and water. For example, Moss.
  • Pteridophyta is the plants which can survive on land as they have well-developed root and stem. For example, Ferns.
Phanerogamae
  • Gymnosperm is the plants with naked seeds. they are evergreen and woody. For example, cycas.
  • Angiosperms are the plants which are fully modified flowering plants. They are further divided into monocot and dicot. Monocots have seeds with one cotyledon and dicot has seeds with two cotyledons. For example - mango

Related Concepts

Thallophyta

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Bryophyta

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Pteridophyta

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Gymnosperms

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Basic Knowledge of Angiosperms

ExampleDefinitionsFormulaes

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